Saw-setting machine.



W. J. HOLMES.

SAW SETTING MACHINE.

APPLICATION FILED NOI.25, 1912.

Patented Nov. 18, 1913.

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lNVfNTOR.

" rnn STATES PATENT onnron,

WILLIAM J'OI-IN HOLMES, F TORONTO, ONTARIO, CANADA.

SAW-SETTING MACHINE.

Specification of Letters Patent. v Patentgd N 18, 1913, Applicationfiled November 25, 1912. Serial No. 733,314. i

To all whom it may concern:

Be it known that 1, WIL IAM JOHN HoLMns, of the city of Toronto, in thecounty of York, in the Province of Ontario,

Canada, have invented certain new and useful Improvements in Saw-SettingMachines, of which the following is the specification.

My invention relates to improvements in saw setting machines, andtheobject of the invention is todevise a simple form of ma- Chine,,whichwill rapidly set in alternate teeth through the holder as hereinaftermore particularly explained by the following specification.

' Figure 1, is a general perspective View of my device, Fig, 2, is avertical section throughthe operating portionshown in Fig. 1, Fig. 3,'isa plan view of the parts shown in Fig. 2. Fig, 4c, is a perspectivedetail of the saw holding arm.

7 In the drawings like letters of reference indicate correspondingpa tsi ea figure. A is the main frame provided at one end with a bearingstandard A and at the opposite end with a lug A having a horizontal slotA 13 is the operating shaft journaled in the standard A.

B is an operating crank secured on the outer end of the shaft B.

B is a'disk secured to the shaft B at its opposite or inner end.

B and B are rollers journaled on the outer face of the disk B 13 is aboss extending from the inner face of the disk B B is a roller journaledon a pin B extending eccentrically from the boss B C is an arm extendingrearwardly from the standard A. Such arm is provided with an enlargedouter end G preferably triangular in plan section. The arm G is adivided arm, the members 2 and 3 of which may be drawn together by thescrew C extending through the arm C and through the boss C extendingupwardly from the rnemberQ. j

C is an adjusting nut by means of which the members of the arm may bereadily drawn together.

C is an opening extending through the enlarged triangular portion C ofthe arm 0.

C are laterally extendinggripping portions located above and below thesaw,

D is a settingplunger vertically and slid; ably held withintheenlargement C of the arm C, The plungerD is provided with a settingnotch D having upper and lower inclined setting surfaces 1) and D D isthe enlarged lower end of the setting plunger I) having the horizontalslot other end of the arm E is provided with an enlargement E havingside flanges E provided with longitudinal slots E open at one end. Theenlargement E is also provided with a vertical slot E F is the saw,which fits at its base within the ends of the slots E.

E is an adjustable piece secured in position by the bolt E secured inthe slot E E is a strip of metal fitting in the slot E between the backof the saw and the piece E and of substantially the same thickness asthe saw. The strip E is provided with enlarged ends E to prevent lateral movement within the slot-s E H and H are rods slidably held withinthe hearing A and extending parallel with the saw.

H is a cross piece secured on the cross rods H and H and provided withbearing lugs H between which the feeding pawl H is j ournaled by the pinH H is a tension spring connecting the free end of the pawl to the pin Hextending upwardly from the piece H H and H are compression springsextending between the piece H and thestandard A. i

H is a piece secured on the opposite end of the rods H and H. The pieceH is provided with an inward extension H 10- cated in the path' oftravel of the rollers 13 and B i H is a wing nut threaded on to the endof the barH against the piece H .H is a set screw xtendi g h ough hepiece H against the standard A. The bars H and H and pieces H and H forma movable frame carrying the feed pawl H".

Having described the principal parts involved in my invention I willbriefly describe the operation of the same. By turning the crank B, theshaft B and disk B are rotated carrying the rollers B and B alternatelyinto engagement with the extension II of the piece H and forcing suchpiece in the direction of arrow (see Fig. 3) carrying with it the rodsII and II and piece H against the compression of the springs H and IIand the feed pawl H against the base of one of the saw teeth to feed thesaw longitudinally between the portions C Immediately one of the rollersH and H has passed the extension H the compression springsH and H carrythe piece H and the feed pawl H rearwardly from the base of one toothinto position against the base of the next adjacent tooth. To preventthe saw from moving rearwardly as the feed pawl moves rearwardly Itighten the nut C on the bolt C so as to spring the members of the arm Ctogether to grip the saw between the pertions C sufficiently to preventsuch rearward movement and yet allow of the forward movement to feed thesaw through the setting plunger. Alternately with the above operationthe roller B reciprocates the plunger D alternately carrying the faces Dand D against the upper and lower faces of each alternate tooth to setthem in opposite directions. To vary the distance of the feed accordingto the different sizes of teeth I tighten or loosen the nut H therebyvarying the distance which the piece H is carried in the directionindicated by arrow when the rollers B and B are brought into engagementwith the extension H To insure of the pawl coming opposite the base ofthe teeth after each rearward movement I have provided the set screw Hwhich as such rearward movement is completed strikes against thestandard H limiting the movement in the direction opposite to thedirection of arrow.

From this description it will be seen that I have devised a very simpledevice whereby saw teeth of any size and form may be very rapidly set inalternate directions as required.

What I claim as my invention is.

1. In a saw setting machine, the combination with the saw holdingmechanism, of means for feeding the saw tooth by tooth through suchholding means comprising a drive shaft, a disk carried by said shaft, ahorizontally movable frame having a proj ection thereon, horizontalrollers carried by said disk adapted to strike against said projectionand move said frame, means for returning said frame to its normalposition, a

spring pressed pawl carried by said frame adapted to engage the teeth onsaid saw, and means for automatically setting each tooth in alternatedirections, as and for the purpose specified.

2. In a saw setting machine, the combination with a saw holding device,of means for feeding the saw tooth by tooth through the saw holdingdevice, a vertically movable setting plunger, and means for impartingvertical movement thereto to set the saw teeth in alternate directionscomprising a slotted end on said setting means, a drive shaft, a diskcarried by said shaft, a boss on the inner face of said disk, a pinextending eccentrically from said boss, and a roller carried by saidpin, adapted to move in the slotted end of said setting means, as andfor the purpose specified.

3. In a saw setting machine, the combination with the saw holdingdevice, of means for feeding the saw tooth by tooth through the sawholding device, a vertically movable setting device designed to set eachtooth in alternate directions, and means for operating such settingdevice comprising a slotted end on said setting means, a drive shaft, adisk carried by said shaft, a boss on the inner face of said disk, a pinextending eccentrically from said boss and a roller carried by said pin,adapted to move in the slotted end of said setting means, as and for thepurpose specified.

4. In a saw setting device, the combination with the main frame, of aholding device comprising a horizontally divided arm extending above andbelow the saw and designed to grip the upper and lower surface.

thereof, means for feeding the saw tooth by tooth between the grippingportions of the arm, vertically operated means for setting the teeth andmeans for operating such setting means comprising a slotted end on saidsetting means, a drive shaft, a disk carried by said shaft, a boss onthe inner face of said disk, a pin extending eccentrically from saidboss, and a roller carried by said pin, adapted to move in the slottedend of said setging means, as and for the purpose specifie 5. In a sawsetting device, the combination with the main frame, of a holding devicecomprising a horizontally divided arm extending above and below the sawand designed to grip the upper and lower surfaces thereof, means forfeeding the saw tooth by tooth between the gripping portions of the arm,a vertically movable reciprocating plunger having tooth setting facesdesigned to be brought alternately into engagement with each alternatetooth to set them in opposite direction, and means for impartingvertical reciprocating movement to the plunger comprising a slotted endon said setting means, a drive shaft, a disk carried by said shaft, aboss on the inner face of said disk, a pin extending eccentrically fromsaid boss, and a roller carried by said pin, adapted to move in theslotted end of said setting means, as and for the purpose specified.

6. In a saw setting device, the combination with the main frame, of asaw holding device comprising a horizontally divided arm extending aboveand below the saw to grip the upper and lower faces thereof, and abacking member designed to bear against the back of the saw to hold itin place be-. tween the gripping members, means for feeding the sawtooth by tooth between the gripping members of the arm, and verticallyoperated means for setting the teeth as the saw is fed through theholding device comprising a slotted end on said setting means, a driveshaft, a disk carried by said shaft, a boss on the inner face of saiddisk, a pin extending eccentrically from said boss, and a roller carriedby said pin, adapted to move in the slotted end of said setting means,as and for the purpose specified.

7. In a saw setting device, the combination with the saw holding deviceand setting plunger, of a feeding device comprising a suitably supportedmovable carriage, a projection on said carriage, a feeding pawl carriedby the frame and contacting with the teeth of the saw, a main shaft,means for rotating the main shaft, compression springs, means for movingthe carriage against the compression of the springs operated by therotation of the main shaft comprising a disk carried by the shaft,rollers thereon, adapted to move against said projection, as and for thepurpose specified.

8. In a saw setting device, the combination with the saw holding deviceand setting plunger, of a feeding device comprising a suitably supportedmovable carriage, a projection on said carriage, a feeding pawl carriedby the carriage and engagingthe tooth of the saw, a main shaft, meansfor rotating the main shaft, compression springs, means for moving thecarriage against the compression of the springs operated by the rotationof the main shaft comprising a disk carried by the shaft, rollersthereon, adapted to move against said projection, and means for varyingthe movement of the carriage in accordance with the size of the teeth tobe fed, as and for the purpose specified.

WILLIAM JOHN HOLMES. Witnesses:

M. EGAN,

N. HAYES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

